it can happen with ANY site. a hacker with enough skills can take down any site they want if they truly wanted to. they'll just need the 'correct' motivation
i don't know if this site has a cybersecurity team constantly monitoring and preventing hack attempts, but that's all you can really do is prevent it. if the site gets hacked, it gets hacked. not much anyone can do about it at that point as users, except acknowledge that any personal information shared may be leaked. that's why personal information shared in here is at the user's own risk.
you want to prevent your information to not get leaked? learn and apply 'cybersecurity best practices'. using this site has its risks for obvious reasons, but in most cases, the chances of these ever happening is extremely low or doesn't happen at all.
some users just want to feel comfortable being here, so constantly thinking about rare threats is probably unnecessary use of energy.